Gamut Mapping Module Clamping Out-of-Gamut Colors
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Solution Overview
Problem
Current image display systems face challenges in effectively mapping input image data from one color space to another, particularly in handling out-of-gamut colors, which can result in reduced image quality and increased complexity in gamut conversion processes.
Innovation Solution
A display system comprising a gamut mapping module that clamps out-of-gamut colors using multiple clamping systems, with a weighting module to produce a final output image value, and a calculation unit to adjust primary color values based on luminance, allowing for improved gamut mapping and subpixel rendering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single clamping system is used to map out-of-gamut colors, then the gamut mapping process is simple, but the image quality deteriorates due to loss of color information
Solution Approach 1:
The patent divides the gamut mapping process into multiple independent clamping systems (first clamping system, second clamping system, etc.), each handling different aspects of color mapping. This segmentation allows each system to specialize in specific color transformations while maintaining overall process manageability and improving color accuracy through coordinated multiple operations.
2Manufacturing precision
If multiple clamping systems are used to improve color mapping accuracy, then image quality improves, but the processing complexity increases
Solution Approach 1:
The patent introduces intermediate color space representations and intermediary calculation steps between the input image data and final output. These intermediaries facilitate smooth transitions through multiple clamping systems, enabling complex color transformations to be broken down into manageable stages that preserve color information while maintaining process clarity.
3Manufacturing precision
If out-of-gamut colors are not properly handled, then the processing is fast, but the image quality deteriorates with reduced color accuracy
Solution Approach 1:
The patent performs preliminary detection and classification of out-of-gamut colors before applying complex transformation algorithms. By identifying colors that require special handling in advance and preparing appropriate mapping strategies beforehand, the system efficiently processes these colors through dedicated clamping systems without sacrificing color accuracy or significantly increasing processing time.
Data Source
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AI summary
A display system comprising a display panel substantially comprising a subpixel repeating group with at least four primary colored subpixels, said display system further receiving input image data specified in a first color space and outputting image data specified in a second color space. The display system further comprises a gamut mapping module configured to map an input image color value of said input image data specified in said first color space to an image color value specified in said second color space, said gamut mapping module clamping out-of-gamut colors using at least first and second clamping systems, said first and second clamping systems producing first and second clamped values. The display system also includes a weighting module producing a resulting clamped value from said first and said second clamped values, and wherein a final output image value is derived from said resulting clamped value.